Even when you are in the business of fun, not every week ends up being fun. This week, our security team found an unauthorized and illegal access into our internal network here at Blizzard. We quickly took steps to close off this access and began working with law enforcement and security experts to investigate what happened.

At this time, we’ve found no evidence that financial information such as credit cards, billing addresses, or real names were compromised. Our investigation is ongoing, but so far nothing suggests that these pieces of information have been accessed.

Some data was illegally accessed, including a list of email addresses for global Battle.net users, outside of China. For players on North American servers (which generally includes players from North America, Latin America, Australia, New Zealand, and Southeast Asia) the answer to the personal security question, and information relating to Mobile and Dial-In Authenticators were also accessed. Based on what we currently know, this information alone is NOT enough for anyone to gain access to Battle.net accounts.

We also know that cryptographically scrambled versions of Battle.net passwords (not actual passwords) for players on North American servers were taken. We use Secure Remote Password protocol (SRP) to protect these passwords, which is designed to make it extremely difficult to extract the actual password, and also means that each password would have to be deciphered individually. As a precaution, however, we recommend that players on North American servers change their password. Please click this link to change your password. Moreover, if you have used the same or similar passwords for other purposes, you may want to consider changing those passwords as well.

In the coming days, we'll be prompting players on North American servers to change their secret questions and answers through an automated process. Additionally, we'll prompt mobile authenticator users to update their authenticator software. As a reminder, phishing emails will ask you for password or login information. Blizzard Entertainment emails will never ask for your password. We deeply regret the inconvenience to all of you and understand you may have questions. Please find additional information here.

We take the security of your personal information very seriously, and we are truly sorry that this has happened.

Sincerely,
Mike Morhaime

Important Security Update FAQ

Originally Posted by Blizzard
(Blue Tracker)

Is there anything that players need to do right now to protect themselves?
While there is currently no evidence that any of the password or player data has been misused, we encourage our North American players to change their passwords. Click here to login and change your password.

In the coming days we will implement an automated process for all users to change their secret questions and answers, as a precautionary measure. We'll also prompt mobile authenticator users to update their authenticator software.

Additionally, while Blizzard has no indication that any of your information was shared with any other unauthorized parties or that there has been any unauthorized use of your data, we urge all members of our community to closely monitor all of their online accounts.

Players should also be wary of fraudulent emails (phishing). Unfortunately, because email addresses were exposed, it is entirely possible that this could result in an increased, targeted phishing campaign being sent to our users. Check this page for tips on how to spot and avoid these types of fraudulent emails.

What data was affected?
Here's a summary of the data that we know was illegally accessed:

North American-based accounts, including players from Latin America, Australia, New Zealand, and Southeast Asia:

Information associated with Phone Lock, a security system associated with Taiwan accounts only

Accounts from all global regions outside of China (including Europe and Russia):

Email addresses

China-based accounts:

Unaffected

At this time, there’s no evidence that financial information of any kind has been accessed. This includes credit cards, billing addresses, names, or other payment information.

What information related to Mobile and Dial-In Authenticators was exposed? What about Phone Lock?
With regard to Dial-In Authenticators, hashed (not actual) phone numbers were accessed. This is phone data from the relatively small number of people who opted into the program.

With regard to Mobile Authenticators, information was taken that could potentially compromise the integrity of North American Mobile Authenticators. We have no evidence that other regions were affected. We are working quickly to provide software updates to users.
Additionally we believe the integrity of the physical authenticators remains intact.

The information relating to Phone Lock represents a small number of hashed (not actual) phone numbers from Taiwanese players who opted into this service and had a North American Battle.net account.

Was the physical authenticator compromised?
We believe the integrity of the physical authenticators remains intact.

How did this happen?
Like all companies doing business online, it is not an uncommon occurrence to experience outside parties trying to illegitimately gain access to the operation’s structure at some level. We are continually upgrading our security technologies, policies, protocols and procedures to protect our customers and our games against the threats that increasingly arise in today’s online world.

When did Blizzard learn of the unauthorized access?
The trespass into our internal network was detected by us on August 4, 2012.

Why did Blizzard announce this on August 9?
We worked around the clock since we discovered the unauthorized user to determine the nature of the trespass and understand what data was accessed. Our first priority was to re-secure our network, and from there we worked simultaneously on the investigation and on informing our global player base. We wanted to strike a balance between speed and accuracy in our reporting and worked diligently to serve both equally important needs.

What action has Blizzard taken?
Upon learning of the unauthorized access, we worked quickly to re-secure our network. Afterward, we immediately notified law enforcement as well as security experts and launched an ongoing investigation to determine what had occurred. We also took steps to notify players, which happened in a matter of days from the time we discovered the illegal access.

Was any personal or financial information accessed?
At this time, there is no evidence that financial information was affected or accessed. There's also no evidence that personal information such as real names or billing addresses were accessed.

What can you tell us about the scrambled passwords that were accessed?
Cryptographically scrambled versions of passwords for North American players were accessed, protected by Secure Remote Password (SRP) protocol. This information alone doesn't give unauthorized users the actual passwords -- each password would need to be deciphered individually. The added layer of protection from SRP makes that process computationally very difficult and expensive.

Why not immediately invalidate the secret questions and answers that were compromised?
This was a difficult decision to make but in the end we believe that keeping the secret questions and answers in place still provides a layer of security against unauthorized users who don't have access to the compromised data. In the meantime, we are working quickly to create a mechanism for players to change the secret question and answer on their account. Our customer service staff will also know to use additional measures to verify player identities and not rely solely on secret question and answer.

Why not immediately revoke the mobile authenticators?
Similar to the decision surrounding secret question and answer, we still believe that keeping mobile authenticators active provides a layer of security against unauthorized users who don't have access to the compromised data. In fact, the mobile authenticator information by itself won't grant access to a Battle.net account -- that still requires the actual password as well. We are working quickly to deploy new mobile authenticator software and will notify players to update as soon as it's available.

Are you taking additional security measures as a result of this occurrence?
We are continually upgrading our security technologies, policies, protocols and procedures to help protect our customers and our games, and will continue to monitor the situation closely.

Teams have also been working around the clock in an ongoing investigation with law enforcement and security experts, to gain a more detailed understanding of what happened. As we conclude the investigation there will be lessons learned that can help strengthen our security going forward.

I hope you have a source for this remarkably outrageous statement. If they had gotten over private authenticator keys and serial numbers they would not be saying:

Stop with this nonsense FUD.

You should re-read. All they need to do is crack the pass words right now to gain access. It says right in the statement the north american bnet authenticators on smart phones *may* have been compromised. Read as: was. Company like blizzard does nothing off the cuff, they had 5 days to prepare this statement, it's laced with policy and politicking.

A few days from now it wont matter though, since a software update will fix it, i doubt they will be able to crack the scrambled pass words between now and then.

Always adorable when people who haven't a clue about something try to make it out otherwise. FYI, authenticators are extremely difficult and time consuming to hack, and the only known "hack" requires a great deal of timing and far more information than an ordinary account would. It usually just isn't worth the effort, and it's not like someone can target your account and go "herp derp, he has nice stuff, I want to hack his authenticated account". It's an EXTREMELY specific and unlikely series of events that has to transpire, with you giving the hackers the exact info they require to do the hack, before it's even possible for them to do.

Look at it this way, they didn't get passwords from the blizz hack, but they did get authenticator info. Back during the D3 Hack craze farmers openly admitted they hacked fan sites to get login details for thousands of accounts without authenticators.... well guess what, now it's thousands with authenticators who used the same password in both and are at risk.

You should re-read. All they need to do is crack the pass words right now to gain access. It says right in the statement the north american bnet authenticators on smart phones *may* have been compromised. Read as: was. Company like blizzard does nothing off the cuff, they had 5 days to prepare this statement, it's laced with policy and politicking.

A few days from now it wont matter though, since a software update will fix it, i doubt they will be able to crack the scrambled pass words between now and then.

Reading between the lines is hard.

If you read the line

With regard to Mobile Authenticators, information was taken that could potentially compromise the integrity of North American Mobile Authenticators.

And translate it to

All authenticators are now useless but Blizzard doesn't want to say it and we have to "read between the lines".

Then I believe you will find a remarkably large number of interesting theories about the "truth" of the world out on the internet. This is the kind of selective and intentional misinterpretation that is responsible for every conspiracy theory out there.

Then I believe you will find a remarkably large number of interesting theories about the "truth" of the world out on the internet. This is the kind of selective and intentional misinterpretation that is responsible for every conspiracy theory out there.

Believe what you like. I've no interest in changing your opinion or proving you wrong.

So on the server "terenas", there was a guy selling Reins of the Crimson Deathcharger x 5.....i'm just wondering if it was something he got from blizzard during this security breach? and whoever buys them, will they get banned?